IOWA ACADEMY OF SCIENCES. 
151 
eastern extension, which was nearly in line with the sun’s 
equator instead of either north or south of it as some 
supposed. 
In the accompanying illustration is reproduced a sketch 
I made shortly after returning home, aided also by the 
photograph taken with the 2^-inch portrait lens. This 
sketch represents more clearly the details of the Corona 
than can be secured with a single photographic exposure. 
VISUAL OBSERVATIONS OF THE CORONA. 
Fully 45 seconds were consumed after totality com- 
menced in exposing plates, changing plate holders and the 
eye-pieces of the telescope; the remaining 45 seconds were 
spent in examining the Corona through the telescope and 
with the naked eye. 
The spectacle was magnificent; to the naked eye the 
moon appeared not as a flat disc, but a great inky-black 
globe suspended in the sky with the incomparable glory of 
the silvery light of the Corona as a background. 
Seen through the telescope the soft Coronal radiance was 
apparently structureless with the beautiful, pinkish-scarlet 
prominences at its base. The polar rays were strongly sug- 
gestive ofelectrical origin and reminded me very much of 
some fine displays of the Aurora Borealis which I wit- 
nessed in the years 1892 to 18M. As the time of the third 
contact came on, the rich scarlet chromosphere was visible 
a few moments and like a dissolving view changed to a 
light pink, when, quickly as a lightning flash the brilliant 
thin crescent of the photosphere appeared, and the scene 
was ended. 
